Highly efficient pyrene-based blue emitters utilizing optimized side groups

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED Dyes and Pigments Pub Date : 2024-12-12 DOI:10.1016/j.dyepig.2024.112596

Saeyoung Oh , Hyocheol Jung , Sangwook Park , Suhyeon Jeong , Kiho Lee , Young Il Park , Hayoon Lee , Jongwook Park

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引用次数: 0

Abstract

We designed and synthesized two blue fluorescent dopants, 3,8-diisopropyl-N1, N6-diphenyl-N1,N6-bis(8-phenyldibenzo [b,d]furan-2-yl)pyrene-1,6-diamine (DBF-DIP) and N1-(dibenzo [b,d]thiophen-2-yl)-3,8-diisopropyl-N1,N6-diphenyl-N6-(8-phenyldibenzo [b,d]thiophen-2-yl)pyrene-1,6-diamine (DBT-DIP), by introducing dibenzofuran and dibenzothiophene side groups, based on pyrene core chromophore. The synthesized two compounds, DBF-DIP and DBT-DIP, exhibited decomposition temperatures (T_d) of 496 °C and 505 °C, respectively, along with glass transition temperatures (T_g) of 170 °C and 174 °C, indicating their excellent thermal stability. When used as dopants in OLED devices, both DBF-DIP and DBT-DIP exhibited an excellent electroluminescent (EL) device performances with current efficiencies (CE) of over 10 cd/A. Especially, the DBT-DIP device demonstrated a maximum external quantum efficiency of 8.25 % and CE of 11.2 cd/A at 10 mA/cm².

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.